On April 20th it was the valley rain and solar terms. Rainfall increased after the rain, the humidity in the air gradually increased, the temperature increased, the light was sufficient. With hundreds of people enjoying the rain, all kinds of crops can thrive, and the vegetables that are protected in facilities are the critical period of growth and need to be strengthened. The open-weather thermophilic vegetables are suitable for planting. The motherland's land presents a vibrant scene of spring farming. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
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Explosive warm-weather crop colonization
Cucumbers, tomatoes, eggplants, peppers, wax gourds, pumpkins, and other warm-growing fruits and vegetables grown in the open field are gradually transplanted into the field, and the “cold tail warmer†is selected for the sunny planting. Climate index at the time of planting: minimum temperature for 5 consecutive days Stable above 10 °C, 10 cm ground temperature stable above 13 °C. To apply organic manure as base fertilizer, apply more than 4,000 kilograms of fine and fine organic manure per acre. Two-thirds of it should be laid in front of the cultivated land and one third of it should be applied to the surface at the time of earthworms. Fine soil preparation, to achieve leveling, leveling, ridge straight, no rubbish; 5 to 7 days before planting on the seedlings at low temperature refining seedlings; density is appropriate when planting, consistent depth, the farmer said: "deep planting eggplant, shallow planting melon "Tomatoes and eggplants should be planted in depth, covering more than 2 to 3 centimeters above the seedling mites; cucumbers, squash, wax gourds and other melons should be planted in shallow depths, and the cover soil and seedling mites should be equal." Plant water immediately after planting.
The greenhouse vegetable is at the critical stage of yield formation
The cucumbers in the greenhouse are at fruitful stage and must be harvested in time; the crops such as tomato, eggplant and sweet pepper are in the fruiting period and are the key period for the formation of yield.
Adjust the suitable growth environment to open and close the tuyere in time according to the external climate change, ventilate and change the air, and decide whether or not to put the insulation at night according to the temperature. On sunny days, the suitable temperature is 23°C~30°C, on cloudy days, 3°C~5°C, suitable temperature is 20°C~23°C, and the suitable temperature is 15°C~20°C at night; different indoor air is adjusted according to different crops Humidity, tomatoes, eggplants and other crops are maintained at 40% to 50%; sweet peppers and cucumbers and other melon crops are maintained at 60% to 80%. Increase your daylight hours as much as possible.
The plants are arranged in a timely manner to hang vines, vines, loquats, pruning and smashing to remove the lower yellow leaves and old leaves. Tomato in the first ear fruit grows to the green ripening period (when whitening no longer grow up) the lower leaves will be destroyed, and the dark green leaves of the lower part of the cucumber should be promptly knocked out to prevent infection of downy mildew due to poor ventilation. Tomato and cucumber plants should retain about 16 functional leaves per plant.
Fruit management Tomatoes and eggplants should adopt natural pollination methods to maintain their flavor and quality. They can be pollinated by pollinators, or they can be released by 1 to 2 boxes of bumblebees per acre to assist in pollination; if growth regulators are used to decorate or spray flowers, they should be According to different room temperature to prepare different concentrations, to prevent the formation of malformed fruit concentration is too high. Tomatoes should be sprayed with oscillating pollinators or regulators when they open 3 or 4 flowers per panicle. If the flowers are sprayed when they have just opened 1 or 2 flowers, only 1 or 2 of them will affect the yield. Remove excess flowers and fruits as soon as possible. Cucumber does not need to artificially pollinate to be able to produce the melon normally, is forbidden to use "Shun Zhiling" and other hormones to decorate and promote the expansion of the young melon.
According to weather conditions, plant growth and soil conditions, scientific top dressing and watering are top-dressing, and top-dressing should vigorously promote the integration of water and fertilizer technology. It is advisable to use drip irrigation to provide comprehensive nutrition and reasonably proportioned fast-dissolving fertilizer. Tomatoes grow in the length of each ear. To 3 cm in size, topdressing soluble fertilizer 5~8 kilograms per mu; can also be applied with water, nitrogen, phosphorus, potassium, alginate or humic acid organic liquid fertilizer; water to be poured, each watering per acre 8 to 10 squares to avoid flooding. A 20-bag carbon dioxide gas fertilizer is suspended per acre to increase the carbon dioxide concentration in the room, thereby increasing production and improving quality.
Timely harvesting of timely harvested fruits is recommended. Harvesting in the early morning hours is appropriate to improve the nutrient content, taste, and flavor of the fruit; cucumbers, sweet peppers, and eggplants are cut with scissors to prevent them from being pulled by hand. Broken plants and susceptible to disease. Take care when picking, avoid forming fruit damage and reduce product quality. If bamboo baskets or Vitex baskets are used, they should be covered with soft paper or agricultural film to prevent them from stinging; they must also be classified according to fruit size.
Greenhouses do a good job in two periods of management
Cucumbers have been harvested and marketed in early spring. Tomatoes, eggplants, sweet peppers and other crops have entered the fruiting period. In addition to timely adjustment of the appropriate temperature and indoor air humidity, the following two periods should be managed.
In the flowering period, cucumbers, tomatoes, and other creeping crops are managed in time to hang vines and vines to fix the plants. It is better to use silver-gray plastic ropes to hang vines, which has a tendency to avoid aphids. Don't snoring prematurely, wait until the branches of the first panicle grow to 8 cm before they hit, so as not to affect the growth of the roots; the fruit-type cucumbers will spat off the young melons and buds below the fifth leaves as early as possible. Six leaves began to melon. Tomatoes and eggplants are preferably pollinated by bumblebee or pollinator-assisted pollination to promote fruit setting, and can also be used to promote fruit setting by means of safe "Fengceng No. 2" or "Jiaoning Ning" spray or flowering, but they must be mastered. Concentration and timing of operation, to avoid the appearance of malformed fruit, too few fruit sets, and irregular fruit growth.
Fruit enlargement management until the base of the fruit to sit and start to expand and then top-dressing fertilizer, tomato fruit until the first spike to walnut size (diameter of about 3 cm), eggplant opening period (fruit diameter 3 to 4 cm) is appropriate. When watering, it should be selected in sunny morning. It is advisable to use drip irrigation to provide comprehensive nutrition and reasonable ratio of soluble fertilizer. According to the law of different crops requiring fertilizer, fertilizers of different proportions are selected, and the content of N, P and K in tomatoes should be topped with 16: 8:34 high-potassium, quick-dissolve fertilizer, 5-8 kg per mu; can also be applied with water, nitrogen, phosphorus, potassium, alginate or humic acid organic liquid fertilizer. A 20-bag carbon dioxide gas fertilizer is suspended per acre to increase the indoor carbon dioxide concentration.
Seeding and planting of open-cut ripe vegetables
After the solar energy season, it is still possible to continue planting leeks and sowing or planting rapeseed, Chinese cabbage, radish, fennel, celery and other fast-growing vegetables. We must do a good job of fine soil preparation, uniform sowing, suitable soil cover, and appropriate moisture conditions.
The cabbage, cauliflower, lettuce and lettuce crops planted in early spring have entered the rosette period one after another. We must do a good job in the management of cultivating loose soil, top dressing, watering, etc., and at the same time do a good job of top-dressing, watering, and other management of onion seedlings. For the early-maturing or planting of fast-ripening vegetables and “prepared†spinach planted before the winter, watering and cultivating management should be strengthened. Over-winter burial spinach should be harvested from late April to early May. Close listing.